package com.maxd.service.AliPay;
import com.maxd.utils.SignUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.*;

public class OrderInfoServiceImpl {

    /**
     * 构造支付订单参数列表
     * @param app_id
     * @param rsa2 是否用rsa2加密
     * @param body  user_id+ coupon_id
     * @param order_no 运单号
     * @return
     */
    public static Map<String, String> buildOrderParamMap(String app_id,String body,String order_no,String total_fee,String notify_url) {
        String subject="订单支付";
        Date now1 = new Date();
        SimpleDateFormat dateFormat1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//可以方便地修改日期格式
        String hehe1 = dateFormat1.format(now1);

        Map<String, String> keyValues = new HashMap<String, String>();

        keyValues.put("app_id", app_id);

        keyValues.put("biz_content", "{\"timeout_express\":\"30m\",\"product_code\":\"QUICK_MSECURITY_PAY\",\"total_amount\":\""+total_fee+"\",\"subject\":\""+subject+"\",\"body\":\""+body+"\",\"out_trade_no\":\"" + order_no +  "\"}");

        keyValues.put("charset", "utf-8");


        keyValues.put("notify_url", notify_url);

        keyValues.put("method", "alipay.trade.app.pay");

        keyValues.put("sign_type","RSA2");

        keyValues.put("timestamp", hehe1);

        keyValues.put("version", "1.0");

        return keyValues;
    }

    /**
     * 构造支付订单参数信息
     *
     * @param map
     * 支付订单参数
     * @return
     */
    public static String buildOrderParam(Map<String, String> map) {
        List<String> keys = new ArrayList<String>(map.keySet());

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < keys.size() - 1; i++) {
            String key = keys.get(i);
            String value = map.get(key);
            sb.append(buildKeyValue(key, value, false));
            sb.append("&");
        }

        String tailKey = keys.get(keys.size() - 1);
        String tailValue = map.get(tailKey);
        sb.append(buildKeyValue(tailKey, tailValue, false));

        return sb.toString();
    }

    /**
     * 拼接键值对
     *
     * @param key
     * @param value
     * @param isEncode
     * @return
     */
    private static String buildKeyValue(String key, String value, boolean isEncode) {
        StringBuilder sb = new StringBuilder();
        sb.append(key);
        sb.append("=");
        if (isEncode) {
            try {
                sb.append(URLEncoder.encode(value, "UTF-8"));
            } catch (UnsupportedEncodingException e) {
                sb.append(value);
            }
        } else {
            sb.append(value);
        }
        return sb.toString();
    }

    /**
     * 对支付参数信息进行签名
     *
     * @param map
     *            待签名授权信息
     *
     * @return
     */
    public static String getSign(Map<String, String> map, String rsaKey, boolean rsa2) {
        List<String> keys = new ArrayList<String>(map.keySet());
        // key排序
        Collections.sort(keys);

        StringBuilder authInfo = new StringBuilder();
        for (int i = 0; i < keys.size() - 1; i++) {
            String key = keys.get(i);
            String value = map.get(key);
            authInfo.append(buildKeyValue(key, value, false));
            authInfo.append("&");
        }

        String tailKey = keys.get(keys.size() - 1);
        String tailValue = map.get(tailKey);
        authInfo.append(buildKeyValue(tailKey, tailValue, false));

        String oriSign = SignUtils.sign(authInfo.toString(), rsaKey, rsa2);
        String encodedSign = "";

        /*try {
            encodedSign = URLEncoder.encode(oriSign, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }*/
        return "sign=" + oriSign;
    }


}